TSB: HARLEY-DAVIDSON RA1250, RA1250S, RH1250S, RH975S (2021–2023)

Bulletin M1619 — December 18, 2023

Bulletin Details

Bulletin IDM1619
ManufacturerHARLEY-DAVIDSON
ModelsRA1250, RA1250S, RH1250S, RH975S
Model Years2021–2023
Date IssuedDecember 18, 2023
Date Added to NHTSAJanuary 5, 2024
ComponentELECTRICAL SYSTEM
Vehicles Affected10 combinations

What is a TSB?

A Technical Service Bulletin is a document issued by the vehicle manufacturer to inform dealership technicians about a known issue and the recommended repair procedure. TSBs are not mandatory recalls — they serve as repair guidance for common problems.

If your vehicle has this issue, bring this bulletin ID to your dealer. If under warranty, the repair should be covered at no cost.

Summary

SERVICE BULLETIN M1619: DIAGNOSTIC TROUBLE CODE (DTC) U04438F AND U04318F. Purpose: This bulletin informs dealers that the current software version for the Left Hand Control Module (LHCM) and Right Hand Control Module (RHCM) have Diagnostic

Affected Vehicles

MakeModelYearComponent
HARLEY-DAVIDSON RA1250 2023 110000 ELECTRICAL SYSTEM
HARLEY-DAVIDSON RA1250S 2023 110000 ELECTRICAL SYSTEM
HARLEY-DAVIDSON RH1250S 2023 110000 ELECTRICAL SYSTEM
HARLEY-DAVIDSON RH975S 2023 110000 ELECTRICAL SYSTEM
HARLEY-DAVIDSON RA1250 2022 110000 ELECTRICAL SYSTEM
HARLEY-DAVIDSON RA1250S 2022 110000 ELECTRICAL SYSTEM
HARLEY-DAVIDSON RH1250S 2022 110000 ELECTRICAL SYSTEM
HARLEY-DAVIDSON RA1250 2021 110000 ELECTRICAL SYSTEM
HARLEY-DAVIDSON RA1250S 2021 110000 ELECTRICAL SYSTEM
HARLEY-DAVIDSON RH1250S 2021 110000 ELECTRICAL SYSTEM

Related HARLEY-DAVIDSON Recalls

CampaignModelYearComponentSummary
FLTRX 2026 ENGINE AND ENGINE COOLING:EXHAUST SYS... Harley-Davidson Motor Company (Harley-Davidson) is recalling certain 2024-202...
FLTRX 2025 ENGINE AND ENGINE COOLING:EXHAUST SYS... Harley-Davidson Motor Company (Harley-Davidson) is recalling certain 2024-202...
FLTRX 2024 ENGINE AND ENGINE COOLING:EXHAUST SYS... Harley-Davidson Motor Company (Harley-Davidson) is recalling certain 2024-202...
FLTRT 2026 ENGINE AND ENGINE COOLING:EXHAUST SYS... Harley-Davidson Motor Company (Harley-Davidson) is recalling certain 2024-202...
FLHXU 2025 ENGINE AND ENGINE COOLING:EXHAUST SYS... Harley-Davidson Motor Company (Harley-Davidson) is recalling certain 2024-202...

What Should You Do?

If your vehicle is affected by this TSB, contact your authorized HARLEY-DAVIDSON dealer. Bring this bulletin ID (M1619) when you visit. If under warranty, the repair should be free. If your warranty has expired, ask about goodwill coverage — manufacturers sometimes cover TSB-related repairs beyond the warranty period.

Frequently Asked Questions

A recall is a mandatory safety fix — the manufacturer must repair every affected vehicle for free. A TSB is an advisory document that describes a known issue and the recommended fix, but repairs are not required. However, some TSBs eventually lead to recalls if the issue poses a safety risk. TSBs are generally issued for quality or performance problems, while recalls address safety defects.

If your vehicle is still under the manufacturer's warranty, TSB-related repairs are typically covered at no cost. If your warranty has expired, you can ask the dealer about goodwill or customer assistance programs. Many manufacturers will cover or partially cover repairs for well-known issues, especially if the TSB was issued recently or affects a large number of vehicles.

Check the make, model, and model year listed above against your vehicle. If they match, this bulletin likely applies. However, TSBs may only affect vehicles with specific production dates, VIN ranges, or configurations. Your dealer can confirm by entering your VIN into their service system, which will show all applicable TSBs and recalls.

This data comes from the National Highway Traffic Safety Administration (NHTSA). Manufacturers are required to submit copies of all communications (including TSBs) sent to their dealers to NHTSA. The agency makes this data publicly available as part of its vehicle safety monitoring program.